You simply need to go shopping. Since you didn't specify console or slab, are you listening solely through headphones, or your own separate monitors? I'm not sure what the ringing was that you heard, but that only reinforces that you need to go play several. If you are using headphones exclusively, bring your own to help reduce variables.

Also, the last item on your list, in-home service, is only offered on a few models in your price range. All of them are consoles, and most with in-home warranty are above $2500. If I focus on that requirement, it would include Yamaha CLP-430 & probably 440, probably all of Kawai's CN models, and Roland consoles (F120, RP-301, DP-90).

That's a good list anyway, but they are the only ones that hit every requirement.

If you revisit Roland, I would be curious if you still hear the ringing in other models or through the console speakers. We received a Roland recently with something off in the piano sample of just that instrument. I heard it and my customer heard it, but the repair tech and another pianist in our store couldn't zero in on it. Ears are funny that way. What was obvious and very bothersome to me was too subtle for some but clearly not found in the replacement or in our floor model or in any others that I know of. I've had that happen several times on acoustic pianos, too.